Psychology

• Object permanence, symbolic play, animism, egocentrism, concentration, irreversibility, and conservation are all components of children's schema development.
• The stages of development include the sensorimotor stage (birth to 2 years old), the preoperational stage (2-7 years old), the concrete operational stage (7-11 years old), and the formal operational stage (12 and beyond).
• Each stage involves different cognitive abilities and characteristics such as symbolic function, animism, egocentrism, intuitive thought, centration, irreversibility, conservation, and decentration.